Artificial-stone building-block.



J. BUHLER. ARTIFICIAL STONE BUILDING BLOCK.

APPLICATION TILED APR26. 1909.

Patented Apr. 18, 1911.

id/W4- N T STATES grENT OFFICE? JAKCB BU'HLER, 0F ZURICH, SWITZERLAND.

ARTIFICIAL-STONE BUILDI G-Brock.

Patented Apr. 1s, 1911.

To all whom it may conccm:

Be it known that I, .JAKOB Bt'mmia, a citizen of the Republic of Switzerland, residing at Zurich, Switzerland, have invented certain new and useful Improvements 1n Artificial-Stone Building-Blocks; and I do hereby declare the 'following to be a full, clear, and exact description of the nvention, such as will, enable others skilled in the art to which. it appertains to make and use the same, reference being had to the accomipanying drawings, and to letters or figures ofreference marked thereon, which fiorm a part of, this specification.

My invention relates to a building block or artificial stone and has for its object to provide a block of simple cross section, preferably hollow so that parts of it can be readily broken away to leave portions of the block still capable of interfitting with other parts of the block or with unbroken blocks.

S ecifically the invention comprises an arti cial building block or stone 'Tshaped in cross section provided at one side with grooves and at the other side with tongues and having longitudinal passages. therethrough separated by partition walls and hereinafter more particularly described and claimed.

, Referring to the drawings in which like ,parts are similarly designated, Figure 1 shows a plan and end view of such a block. Fig. 2 shows a block having portions broken away. Fig. 3 is an end. view of a modification. Fig. 4 is an end view of the same block having portions broken away. Fig.

5 shows the block as. used in a wall of a single thickness and Fi 6 shows the block as used in building a wal of one and one-half thickness. Fig. 7 shows the block as used in a wall of double thickness. Fig. 8 shows the block used in a wall of two and one-half thickness and Fig. 9 shows the block as used in a wall of triple thickness. a

Referring now to Fg. 1, the end View of the block is of general T-shape the'head 1 thereof being twice as long as the width of the shank 2. Both head and shank are proone-half thickness as built up by means of vided on one side with a groove 3 and on the opposite side with a tongue 4. The head is.

dividing the shank. The shank'has two Ion-- gitudinal passages T and 8 separated by the web 6 while the head 1 has a greater number of longitudinal passages here shown as respectively.

four in "number and indicated .as 9, 10, 11

web 13' and one of the tongues being formed by the convex face of the arcuate web 14, which W1ll" leave a block similar to that shown in Fig.4.. By cutting away the shank from the preceding block on the dotted line 17 a block will be left similar to that shown 1I1Fi%2'.

In *ig. 3 I have shown a block similar to that shown in Fig. 1, but provided with additional longitudinal passages 18 between the shank and head to facilitate the cutting of the shank from the head along the line 17 It will thus be obvious; (a) that if the shank is removed from the head there remains a block having at one end a oove and at the other end a tongue: (b that if one end of the head he removed by sever ing the blockalong either lines 15*or'16 there remains a hollow block having-. two grooves on one side and two tongues on .the other side. (a) that if both ends of the tially rectangular block having two grooves on one side and two tongues on the other side; (03) that if one or both ends of the head and'the shank are removed there remains a block having a groove on-one side and a tongue on the other; (e) and in the form shown in Fig. 3, two separate usable blocks will be formed by separating along the line 17. One of which consists of the shank and the other of the head or onethird or two-thirds of the head ma be used.

In Fig. 5 I'have diagrammatica 1y shown a perspective view in which a whole or assembling the interlocking blocks.

InFig. 6 I have shown a wall of one and of the head of the T-shaped blocks arecut away so as to resemble Fig. 4 in section single thickness is shown in the manner of which form is thus used in conjunctionwith T-shaped blocks, and Figs. 8 and 9 showother thicknesses of walls built up from the T-shaped blocks and portions of blocks shown in Figs. 2 and 4 and all of the blocks 5 and portions of blocks are interlocking.

shape.

I The interlocking grooves and tongues may be of any other-desired cross-sectional shape capable of interfitting, in which case the webs 13 and 14 should be given'a like 1. A hollow T-shaped building block the .head sectionof which is provided with a groove in one of its sides and a tongue on its opposite side, the shank section of said block having a groove 'in one of its sides and a tongue on its op osite side, said head having webs provide with grooves and tongues corresponding to the aforesaid 2o grooves and tongues and in alinenient with having webs corresponding in shape and in alinement with the tongues and grooves in the sides of the shank, said block having passages between the head and shank sections.

3. A hollow T-shaped building block having a head section provided with a groove 3 on one side, a" tongue 4 on the other'side, two arcuate Webs 13, 14 between said tongue and groove, a straight web 5 between the arcuate webs, a shanksection on said head having a straight web 6 in alinement with the straightweb 5 of the head, a groove 3 on one side of the shank in alinement with the arcuate web 13 in the head and a tongue 4 on the other side of the shank in alinement with the arcuate web 14' in the head whereby the groove and tongue of the head ma be removed to form a section of the same iorm and size ofthe shank.

In testimony that I claim the foregoing as my invention, I have signed my name in presence of two subscribing witnesses.

JAKOB Bt'JHLER.

Witnesses CARL GO'I'IL. BOMBELI, CARL GUBLER. 

